/*
 * RED5 Open Source Flash Server - http://code.google.com/p/red5/
 * 
 * Copyright 2006-2014 by respective authors (see below). All rights reserved.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package org.red5.server.service;

import org.red5.server.api.scope.IScope;
import org.red5.server.api.scope.IScopeHandler;
import org.red5.server.api.service.IServiceHandlerProvider;
import org.red5.server.api.service.IServiceHandlerProviderAware;

/**
 * Allow scope handlers to create service handlers dynamically.
 *
 * @author The Red5 Project
 * @author Joachim Bauch (jojo@struktur.de)
 */
public class HandlerServiceResolver implements IServiceResolver {

	/** {@inheritDoc} */
	public Object resolveService(IScope scope, String serviceName) {
		IScopeHandler handler = scope.getHandler();
		if (handler instanceof IServiceHandlerProvider) {
			// TODO: deprecate this?
			Object result = ((IServiceHandlerProvider) handler).getServiceHandler(serviceName);
			if (result != null) {
				return result;
			}
		}
		if (handler instanceof IServiceHandlerProviderAware) {
			IServiceHandlerProvider shp = ((IServiceHandlerProviderAware) handler).getServiceHandlerProvider();
			if (shp != null) {
				return shp.getServiceHandler(serviceName);
			}
		}
		return null;
	}

}
